US3264008A - Vehicles having electrically controlled automatic level-correcting suspension - Google Patents

Vehicles having electrically controlled automatic level-correcting suspension Download PDF

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Publication number
US3264008A
US3264008A US490790A US49079065A US3264008A US 3264008 A US3264008 A US 3264008A US 490790 A US490790 A US 490790A US 49079065 A US49079065 A US 49079065A US 3264008 A US3264008 A US 3264008A
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United States
Prior art keywords
transfer means
wheel
coil
switch
impulse
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Expired - Lifetime
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US490790A
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English (en)
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Allinquant Fernand Stanislas
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
    • B60G17/0164—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input mainly during accelerating or braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/0416—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics regulated by varying the resiliency of hydropneumatic suspensions
    • B60G17/0424—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics regulated by varying the resiliency of hydropneumatic suspensions by varying the air pressure of the accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/154—Fluid spring with an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2401/00—Indexing codes relating to the type of sensors based on the principle of their operation
    • B60G2401/20—Switches, e.g. mercury or ball type switches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/02—Supply or exhaust flow rates; Pump operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B60G2500/206—Variable pressure accumulators for hydropneumatic suspensions
    • B60G2500/2062—Variable pressure accumulators for hydropneumatic suspensions by varying the air-pressure of the accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/22—Braking, stopping

Definitions

  • This invention relates to an electrical feeding device of the above-mentioned re-feed type which is easy to produce and to mount on a vehicle, irrespective of the number of transfer means.
  • This object can be reached, according to the invention, by use of a single re-feed relay which can be energized by any transfer means set into operation by impulse producing means.
  • the refeed relay has an energizing coil connected through an electrical unidirectional element such as a diode in parallel with each of said transfer means.
  • At least one of the transfer means which required an electrical current exceeding the rating of the associated unidirectional current flow means, is fed through the medium of a power relay associated with the re-feed relay and directly fed by the electrical generator through the general vehicle switch.
  • a more particular object of this invention is to avoid undue level-correction, during a temporary stop at a traffic light for example, an automatic suspension functioning in bad conditions, when brakes are applied.
  • this object is reached by mounting impulse producing means comprising a main switch actuated by the accelerator pedal and delaying means, in the circuit which leads from the electrical generator to the transfer means and to the energizing coil of the re-feed relay.
  • This embodiment is specially designed to break the circuit established by the accelerator pedal after a certain period, whatever the total time during which the drivers foot bears on the pedal may be.
  • the circuit comprising the re-feed relay mobile armature is by-passed by said delaying means but includes the main switch.
  • the main switch and the delaying means determining the time and the total duration of the correction initiating impulses are always connected in a series yet are by-passed by :a re-feed circuit comprising a re-feed relay mobile armature.
  • FIG. 1 is a diagram, with partial section, of a first embodiment of a level-correcting device associated with the suspension elements of a set of wheels of a vehicle;
  • FIG. 2 is a diagram, with partial section, of a second embodiment of a level-correcting device associated with the suspension elements of a set of wheels of a vehicle.
  • FIG. 1 there is shown an oleopneumatic suspension unit 1 associated with a wheel 2 which is carried by an arm 3 and the associated level-correcting device which carries out electrical height detection and controls the feeding of the suspension system.
  • a wheel 2 which is carried by an arm 3
  • the associated level-correcting device which carries out electrical height detection and controls the feeding of the suspension system.
  • Like wheels and suspension systems have been schematically shown and are referred to with prime numbers.
  • the suspension unit 1 comprises, for example, two chambers 4 and5 for each wheel unit, which chambers are filled with gas under pressure and which are enabled to communicate with one another by means of transfer means such an electric valve 6 and a compressor 7, which latter is driven by an electric motor 8.
  • the compressor 7 is advantageously of a type employing pistons but, for the sake of simplicity, it is shown in the drawings as a volumetric machine embodying gear wheels.
  • the transfer means 6 and 7 are under the control of at least one height-detecting contact 9 which is connected to a wheel 2 of the vehicle and permits one or the other of them to be energized when the level of the vehicle is temporarily incorrect. They may each have an indicator lamp such as 6a associated therewith.
  • the feed-controlling device proper comprises an electrical generator 10, a general switch 11 actuated by a key, for instance, a main switch 12 actuated by the accelerator pedal 13, so as to be closed beyond a predetermiend point of the travel of the latter, a slow-acting relay 14 and a re-feed relay 15.
  • the slow-acting relay 14 which is known per se, is disposed immediately on the negative side of the main switch 12 and is normally closed. It has an energizing circuit comprising an induction coil 16a and a condenser 16b connected in parallel, and a resistance 17 is disposed in series with the said energizing circuit and controls the intensity of the current passing through the latter.
  • the re-feed relay 15 has two main terminals 18 and 19 connected by an armature 20 which is normally held open by a spring 20a, but it subject to the action of an energizing coil 21; the latter terminal is connected to the various transfer means by connections 22a, 22b, 22c, 22d, each of which includes a unidirectional connecting element 24 such as a diode.
  • Each transfer means would be connected in parallel between, height detecting contact 9 and the ground-return to a connection such as 22b.
  • the motor and compressor set 7 and 8 requiring a rather substantial current intensity, it is supplied through the intermediary of a power relay 23', the armature of which bears the reference 230 and whose energizing coil 23a is joined to the connection 22a, the supply terminal 23b for the motor 8 then being connected to a point located between the general switch 11 and the main switch 12 actuated by the accelerator pedal.
  • the starting of the vehicle engine is accompanied by depression of the accelerator pedal 13, which closes the contact 12.
  • the resulting energization of the circuits 16a, 16b by way of the resistance 17 results in the opening of the slow-acting relay 14 after a time delay which, in practice, is fixed. If, during this time, there is any incorrectness in the level of the vehicle, there will be upward or downward closing of the contact 9 and energization of the transfer means of the suspension of the vehicle (that is to say, the electric valve 6 in the drawing), possibly with closing of a relay such as 23.
  • the diodes 24 or other. unidirectional connecting elements 24 provided in the connections 22a, 22b, 22c, 22d prevent stray simultaneous energization of several transfer means.
  • FIG. 2 there is shown an alternative embodiment according to which the terminal 18 of the re-feed relay is connected to an electrical generator in parallel with the switch 12 instead of in series with the latter.
  • the embodiment of the FIG. 1 is advantageous, however, in that it avoids any premature operation of the levelcorrecting device during a temporary stop.
  • the application of the brakes in the case of such a stop can produce considerable strain in the suspension.
  • the switch 12 is therefore necessarily opened.
  • the device described can be easily adapted to the characteristics of any particular vehicle and even, if required, of the individual driver, by adjustment of the closing travel of the switch 12 and adjustment of the delay time of the relay 14. This provides final adjustment of that part of the driving time during which the electrical levelcorrecting device proper 6, 7, 8, 9 happens to be actuated by jolting or any other cause, for the purpose of restoring the normal level of the vehicle by successive pulses or stages.
  • Light indicators or signals such as 6a enable the driver to obtain, if desired, an idea of the frequency of the corrections and to check the functioning of the suspension.
  • a vehicle having a body, an accelerator pedal, wheels and a fluid suspension system, at least one suspen sion element associated with each wheel for supporting said body, electrically actuated transfer means for controlling an active fluid mass enclosed within said element, an electrical level-correcting device comprising, in combination, a wheel-switch associated with each wheel for detecting the position thereof relative to said body and for controlling thereby the actuation of said transfer means, impulse-producing means comprising switching means and an electric power source, said impulse-producing means connecting said wheel switch to said electric power source only at selective intervals, a re-feed relay of the normally open type having an energizing coil and a mobile armature actuatable by said coil, said armature in its closed position by-passing said impulse-producing means by closing a circuit between said power source and said wheel switch, at least one unidirectional current flow means connecting said energizing coil to each and every one of said transfer means for providing exploitationztion of said coil at the same time as any one of said transfer means but preventing
  • said switching means comprises a main switch and a normally closed slow-acting relay connected in series between said main switch and said transfer means, said main switch being actuated by said accelerator pedal.
  • a vehicle having a body, an accelerator pedal, wheels, and a fluid suspension system, at least one suspension element associated with each wheel for supporting said body, electrically actuated transfer means for controlling an active fluid mass enclosed within said element, an electrical level-correcting device comprising in combination, a wheel-switch associated with each wheel for detecting the position thereof relative to said body and for controlling thereby the actuation of said transfer means, impulse-producing means comprising switching means and an electric power source, said impulse-producing means connecting said wheel switch to said electric power source only at selective intervals, a re-feed relay of the normally open type having an energizing coil and a mobile armature actuatable by said coil, said armature in its closedrposition closing a circuit between said power source and said wheel switch, at least one unidirectional current flow means connecting said energizing coil to each and every one of said transfer means for providing energization of said coil at the same time as any one of said transfer means but preventing stray simultaneous energization of several transfer
  • said switching means comprises a main switch actuated by said accelerator and a normally closed slow-acting relay connected in series between said main switch and said transfer means, said re-feed relay in its closed position by passing said slow-acting relay.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
US490790A 1962-12-05 1965-09-28 Vehicles having electrically controlled automatic level-correcting suspension Expired - Lifetime US3264008A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR917637A FR1379617A (fr) 1962-12-05 1962-12-05 Dispositif perfectionné applicable à l'alimentation électrique momentanée d'une suspension oléopneumatique à correction d'assiette

Publications (1)

Publication Number Publication Date
US3264008A true US3264008A (en) 1966-08-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
US490790A Expired - Lifetime US3264008A (en) 1962-12-05 1965-09-28 Vehicles having electrically controlled automatic level-correcting suspension

Country Status (8)

Country Link
US (1) US3264008A (xx)
AT (1) AT247171B (xx)
BE (1) BE639152A (xx)
DE (1) DE1292012B (xx)
FR (1) FR1379617A (xx)
GB (1) GB1027890A (xx)
LU (1) LU44707A1 (xx)
NL (2) NL300689A (xx)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3321210A (en) * 1966-04-12 1967-05-23 Frederick J Harding Electrically controlled shock absorber system
US3433493A (en) * 1966-01-05 1969-03-18 Metalstik Ltd Vehicle suspension systems
US3468555A (en) * 1966-05-20 1969-09-23 Lucas Industries Ltd Rear suspension systems for road vehicles
US3528671A (en) * 1966-10-04 1970-09-15 Rheinstahl Henschel Ag Hydraulic apparatus for varying the ground clearance of land vehicles not supported on rails
US3584893A (en) * 1968-03-28 1971-06-15 Boge Gmbh Fa Electronic level regulators for fluid-type suspensions of motor vehicles and the like
US3703298A (en) * 1970-07-06 1972-11-21 Laverda Spa Pietro Device for automatic self-levelling of the body of a threshing-harvesting machine
US3747949A (en) * 1970-03-20 1973-07-24 Bosch Gmbh Robert Apparatus for maintaining the pressure in a pneumatic suspension
JPS4956322A (xx) * 1972-06-12 1974-05-31
US3945664A (en) * 1974-05-10 1976-03-23 Nissan Motor Company Limited Vehicle hydropneumatic suspension system
US4152000A (en) * 1977-07-15 1979-05-01 Caterpillar Tractor Co. Vehicle suspension stabilizing system
US4210344A (en) * 1979-01-26 1980-07-01 Charles Curnutt Controlled shock absorber
US4478431A (en) * 1980-11-25 1984-10-23 Bayerische Motoren Werke Aktiengesellschaft Suspension system for vehicles
CN112629459A (zh) * 2021-01-04 2021-04-09 东风华神汽车有限公司 一种用于车身姿态调平的标定方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2123133B1 (xx) * 1971-01-25 1974-03-22 Peugeot & Renault
BE785928A (fr) * 1971-10-22 1973-01-08 Hoesch Ag Installation de suspension hydropneumatique a excitation independante

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1231167A (fr) * 1959-04-08 1960-09-27 Regie Autonome Transports Dispositif électrique de régulation de la suspension pneumatique des véhicules
FR1283339A (fr) * 1960-12-23 1962-02-02 Perfectionnements aux dispositifs correcteurs d'assiette de véhicules à suspensionfluide

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433493A (en) * 1966-01-05 1969-03-18 Metalstik Ltd Vehicle suspension systems
US3321210A (en) * 1966-04-12 1967-05-23 Frederick J Harding Electrically controlled shock absorber system
US3468555A (en) * 1966-05-20 1969-09-23 Lucas Industries Ltd Rear suspension systems for road vehicles
US3528671A (en) * 1966-10-04 1970-09-15 Rheinstahl Henschel Ag Hydraulic apparatus for varying the ground clearance of land vehicles not supported on rails
US3584893A (en) * 1968-03-28 1971-06-15 Boge Gmbh Fa Electronic level regulators for fluid-type suspensions of motor vehicles and the like
US3747949A (en) * 1970-03-20 1973-07-24 Bosch Gmbh Robert Apparatus for maintaining the pressure in a pneumatic suspension
US3703298A (en) * 1970-07-06 1972-11-21 Laverda Spa Pietro Device for automatic self-levelling of the body of a threshing-harvesting machine
JPS4956322A (xx) * 1972-06-12 1974-05-31
JPS5364420U (xx) * 1972-06-12 1978-05-31
US3945664A (en) * 1974-05-10 1976-03-23 Nissan Motor Company Limited Vehicle hydropneumatic suspension system
US4152000A (en) * 1977-07-15 1979-05-01 Caterpillar Tractor Co. Vehicle suspension stabilizing system
US4210344A (en) * 1979-01-26 1980-07-01 Charles Curnutt Controlled shock absorber
US4478431A (en) * 1980-11-25 1984-10-23 Bayerische Motoren Werke Aktiengesellschaft Suspension system for vehicles
CN112629459A (zh) * 2021-01-04 2021-04-09 东风华神汽车有限公司 一种用于车身姿态调平的标定方法

Also Published As

Publication number Publication date
GB1027890A (en) 1966-04-27
BE639152A (xx)
NL300689A (xx)
LU44707A1 (xx) 1963-12-27
DE1292012B (de) 1969-04-03
NL135243C (xx)
FR1379617A (fr) 1964-11-27
AT247171B (de) 1966-05-25

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